Origin and Hydrochemical Characteristics of Natural Carbonated Water at Seoqwipo, Jeju Island

Abstract

C isotopes and noble gases isotopes (He, Ne) were analyzed to determine their recharge age, source of CO 2 gas and noble gases of carbonated hot spring water and carbonated-water samples collected in the Seoqwipo of the Jeju. The pH of the carbonated waters ranges from 6.21 to 6.84, and the high electrical conductivity range (1,928~4,720 µS/cm). Their chemical composition is classified as Mg(Ca, Na)-HCO 3 and Na(Ca, Mg)-HCO 3 types. As a result of the calculation of groundwater age using CFCs concentrations as an environmental tracer, the carbonated water and groundwater were estimated to be about 47.5~57.2 years and about 30.3~49.5 years, respectively. The δ 13C values of carbonated water range from -1.77 to -7.27‰, and are plotted on thr deep-seated field or the mixing field of the deep-seated and inorganic origin. Noble gases isotopic ( Ne) ratio shows that helium gas of carbonated hot waters comes from deep-seated magma origin.

Major and Trace Element Geochemistry of Korean Bottled Waters

“…The Li concentration in the bottled waters from granitic and metamorphic rocks ranged from 0.58 to 27.9 µg/L (average 7.52 ± 7.18 µg/L, n = 22) and 11.6 to 14.8 µg/L (average 13.6 ± 1.31 µg/L, n = 5), respectively (Table 3, Figure 4). The water samples from metamorphic rocks had higher Li concentrations, similar to that of groundwater in Jeju Island, Korea, which is mostly composed of basaltic rocks (12.0 ± 20.0 µg/L, n = 11) [30]. By contrast, Hyun et al [31] reported significantly lower Li concentrations (0.6 µg/L) in Jeju groundwater (n = 258).…”